Voters showed little enthusiasm for the election in what could be a recordlow turnout. "By their votes, the French people have, in their large majority, preferred hope over anger, optimism over pessimism, confidence over retreat". But after the latest presidential and parliamentary elections, they've been practically decimated.
The conservative Les Republicains may now have nearly half the seats they had before, but with 137 MPs, they are still a force to be reckoned with.
The Socialist Party party of Macron's predecessor, Francois Hollande, lost more than 250 seats, obtaining just 30.
Socialist leader Jean-Claude Cambadélis announced his retirement from the post, and urged the left "to change everything, its form and its substance, its ideas and its organisation". A centrist political movement that did not exist 15 months ago is about to take over the legislature. Now it is set to dominate legislation and win a vast injection of subsidies.
Prime Minister Edouard Philippe has said Macron "has embodied trust, willingness and audacity". He added: "Abstention is never good news for democracy and the low turnout meant the government had "an ardent obligation to succeed".
Government spokesman Christophe Castaner said it signaled voters "had not wanted to hand Macron a blank check".
"It is a strategic role", he told RTL Radio.
"For the first time under the Fifth Republic, the National Assembly will be profoundly renewed, more diverse, younger, with many professional, community and political backgrounds", Catherine Barbaroux, the interim president of En March, said in a speech following Sunday's vote.
The ministry said the far-right National Front was in third place with almost 10% followed by the Socialists with 6.2%.
Former presidential hopeful Marine Le Pen's far-right National Front won only eight seats. The election of Mr Macron to the presidency of the Republic seems to have sent the country into a state of indifference and weariness vis-a-vis the Republic, which is very worrying.
Le Pen said nevertheless that the FN, "against a bloc that represents the interests of the oligarchy, are the only force of resistance".
However, the clear majority notwithstanding, some analysts are of the view that the margin with which Macron has won is still lower than expected.
While the newcomer Macron won a decisive majority, the outgoing socialist government was abler to secure only 34 seats, compared to 284 seats in the prior election. He said he believed Philippe would be reappointed premier.
Many former French political elites are now likely in search of a job. Macron's party, which didn't exist 14 months ago and offered novice candidates from civilian life, has drawn from left and right to fill its ranks, effectively blurring the traditional left-right political divide.